DataForSEO Authorization failed - please check your credentials

Questions
1

I’m having an issue where HTTP Basic Auth works for GET requests but fails for POST requests to DataForSEO API:

My credentials work fine when tested with httpbin.org (both GET and POST)
My credentials work in browser accessing DataForSEO
In n8n: GET requests to DataForSEO return 404 (meaning auth passed)
In n8n: POST requests to DataForSEO return 401 (auth failed)
Using the same credentials for both
Credentials contain special characters (! and #)

Is there a known issue with Basic Auth on POST requests?

2

Hey @codarity
there shouldn’t be a problem with basic auth for post requests, used it recently.

Is there a curl request that does work for sending the same post request?

3

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